Question

Sheila is now 15 years older than her younger brother Sanjay. Ten years from now, Sheila will be twice as old as Sanjay. Find the present age of each of them.
.​

Answer 1

Solution

let x=sanjay's present age

x+15=shila's present age

10 years hence:

sanjay's age=x+10

shila's age=x+15+10=x+25

x+25=2(x+10)=2x+20

x=25-20=5

x+15=20

ans:

• sanjay's present age=5

• shila's present age=20

Answer 2

Answer:

They differentiate into three main types: dermal, vascular, and ground tissue. ... Dermal tissue, for example, is a simple tissue that covers the outer surface of the plant and controls gas exchange. Vascular tissue is an example of a complex tissue, and is made of two specialized conducting tissues: xylem and phloem.They differentiate into three main types: dermal, vascular, and ground tissue. ... Dermal tissue, for example, is a simple tissue that covers the outer surface of the plant and controls gas exchange. Vascular tissue is an example of a complex tissue, and is made of two specialized conducting tissues: xylem and phloem.